Method and an apparatus for processing an audio signal

An apparatus of processing an audio signal, comprising:

• a signal receiving unit receiving a downmix signal including at least one object and object information based on attribute of the object;
• a preset attribute information receiving unit receiving a preset attribute information indicating attribute of preset information to render of the downmix signal;
• a static preset mode receiving unit receiving preset mode corresponding to all data regions of the downmix signal, if the preset information is included in an extension region of a configuration information region based on the preset attribute information;
• a dynamic preset mode receiving unit receiving preset mode corresponding to single data region of the downmix signal, if the preset information is included in an extension region of a data region based on the preset attribute information;
• and
• a rendering unit rendering the downmix signal by applying the preset information to the all data regions or the single data region of the downmix signal,
• wherein the preset mode comprises the preset information and preset metadata corresponding to the preset information and the preset metadata indicates characteristics of the preset information.

A method of processing an audio signal, comprising:

• generating a downmix signal downmixing at least one object;
• generating object information based on attribute of the object;
• generating preset information to control the object by applying to the downmix signal;
• generating preset metadata corresponding to the preset information;
• and
• determining preset attribute information indicating attribute of the preset information.

An apparatus of processing an audio signal, comprising:

• a downmixing unit generating a downmix signal by downmixing at least one object;
• an object information generating unit generating object information based on attribute of the object;
• a preset information generating unit generating preset information to control the object by applying to the downmix signal;
• a preset metadata generating unit generating preset metadata corresponding to the preset information;
• and
• a preset attribute information determining unit determining preset attribute information indicating attribute of the preset information.